It's very possible for the world to move over to renewable energy. But there is large Market for crude oil already that is controlled by the high and mighty in the society, it has a very enviable profit margin. I feel this high and mighty people will fight the emergency of renewable energy because their source of wealth will be touched.
Secondly, it's too expensive to successfully establish the new structure of renewable energy across board, it can actually be done gradually with time but it will take a lengthy duration.
It’s sad that many things are politicalized in our world today but, some of the hold on renewable energy sources are linked with maintenance and cost of acquisition. These equipments are not readily affordable and if we could take the Tesla motors for an example, you would find out the business Musk is put in when the damages to these cars becomes the cases. It first needs to be affordable for easy adoption.
For me, making renewable energy come into fruition globally, it's something that should be done, because the direct emission of carbon has really affected and caused the depletion of the ozone layer, there has been incessant occurrence of heatwave is increasing by day, disaster like flood and wide fire constantly occurring. But if we begin to make renewable energy come through, some of this disasters will be reduced drastically.
For these, nature will always take its course despite human intervention. No doubt we brought or created situations that heightened the effects from these natural disasters but, finding your nation with certain regions or zones on the lines or longitude and latitude will always drag some of these disasters your way.
Good enough since have advanced to a point where we could predict but, it’s just sad that nature takes such toe on some of these nations. Even the Dinosaurs that did no carbon pollution got wiped out by disasters and what have you. Nature will always have its course!